A BIOS Color Attribute is an 8 bit value where the low 4 bits represent the character color and the high 4 bits represent the background color. The name comes from the fact that these colors are used in BIOS interrupts , specifically INT 10h , the video interrupt.

2016年3月25日 · To clear an 80x25 screen you would set all the characters on the screen to a space character and then set the attribute byte with the background color you wish to use. If you have the general wrapper/code for a bootloader already, in theory you should be able to drop Fifo's code into it (I upvoted his answer because it does appear to be correct).

2019年3月14日 · You can use Int 10/AH:0x09. It has the same arguments as Int 10/AH:0x0E, except that BH is the text color. Simply add the following line to your code. mov ah, 09h mov bh, 0xF0 ; add this line, this is the text color (white on black) int 10h Another alternative that I use, since BIOS functions, aren't available in protected mode.

Change text color/colour in 16 bit real mode assembly using int 0x10 and ax = 0x07

2016年4月28日 · ; if you change the second byte, you can change the color of; the character even after it is printed.; character attribute is 8 bit value,; high 4 bits set background color and low 4 bits set foreground color.; hex bin color;; 0 0000 black; 1 0001 blue; 2 0010 green; 3 0011 cyan

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1_sample.asm. Top. File metadata and controls. Code. Blame. ... high 4 bits set background color and low 4 bits set foreground color.; hex bin color; ; 0 0000 black; 1 0001 blue; 2 0010 green; 3 0011 cyan; 4 0100 red ; 5 0101 magenta; 6 0110 brown; 7 0111 light gray ...

2023年9月25日 · Welcome to `r/asm`, the subreddit for Assembly language in all Instruction Set Architectures! Hey guys! I have a project where I need to show a 16 color bitmap in 8086 asm, my professor is really bad and I could use some help, if somebody can tell me where to start or if they have experience with some similar task, any help works.

2021年5月19日 · Since you apparently want to cycle the text colors, it might make sense to define an array of color values and an index. Then you can just increment the index, set the color, and check to see whether you've exceeded the max index and need to reset to 0.

2017年10月28日 · When operating in video mode 13h or even 12h it’s sometimes necessary to adjust palette colors. For example to adjust to match colors of image being displayed or different scenery of a computer game, this way it is possible to …